if you collect silver coins and copper coins after some days a black coating on silver coins and a green coating on copper coins. which chemic phenomena is responsible for these coatings? write the chemical name of black and green coatings.
Answers
Answered by
3
The phenomenon is known as Oxidation.
Black Coloured Coating on Silver Coins is Silver Oxide.
Green Coloured Coating on Green Coins is Copper Oxide.
Black Coloured Coating on Silver Coins is Silver Oxide.
Green Coloured Coating on Green Coins is Copper Oxide.
Answered by
1
HEY!!
_______________________________
⚫The black coating on the silver coin takes place because of the formation of a chemical compound silver sulphide (Ag2S).
⚫Formation of this compound takes place when silver reacts with the hydrogen sulphide (H2S) present in the atmosphere.
⚫The green coating on the copper coin takes place because of the formation of a chemical compound copper carbonate.
⚫Formation of this compound takes place when copper reacts with the carbon dioxide, moisture and oxygen present in the atmosphere.
_______________________________
⚫The black coating on the silver coin takes place because of the formation of a chemical compound silver sulphide (Ag2S).
⚫Formation of this compound takes place when silver reacts with the hydrogen sulphide (H2S) present in the atmosphere.
⚫The green coating on the copper coin takes place because of the formation of a chemical compound copper carbonate.
⚫Formation of this compound takes place when copper reacts with the carbon dioxide, moisture and oxygen present in the atmosphere.
Similar questions